Which one among the following is not a tributary of river Luni?

The Luni River is the largest river system in western Rajasthan, originating near Ajmer in the Aravalli Range [3]. Its major left-bank tributaries include the Sukri, Jawai, Bandi, and Khari [1]. Specifically, the Jawai and Sukri are prominent seasonal streams that merge with the Luni during its course toward the Rann of Kutch [4]. The Khari is also identified as a significant tributary within the Luni basin. In contrast, the Banas River is a major tributary of the Chambal River, belonging to the Yamuna-Ganga drainage system rather than the Luni basin. While there is a 'West Banas' river in Rajasthan, the primary Banas River flows eastward and is distinct from the Luni's drainage network. Therefore, Banas is not a tributary of the Luni.

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 3: The Drainage System of India > Luni River > p. 19
2. [3] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 17: Contemporary Issues > p. 106
3. [4] https://phedwater.rajasthan.gov.in/content/dam/doitassets/water/Ground%20Water/Pdf/PublicReports/Groundwater_Atlas/Basinwise/Luni%20River%20basin.pdf